What is the function of acetylsalicylic acid?
Aspirin, also known as acetylsalicylic acid (ASA), is a medication used to reduce pain, fever, or inflammation. Specific inflammatory conditions which aspirin is used to treat include Kawasaki disease, pericarditis, and rheumatic fever.
What is the heat of formation of aspirin?
It is worthnoting that the formation enthalpy calculated in the present work, and in very good agreement with experimental data, is well above previous calculated values employing semi-empirical (AM1) heats of formation [9] (about -140 kJ mol -1 ) for aspirin. …
What is the synthesis of aspirin?
The Chemistry of Aspirin (acetylsalicylic acid) Aspirin is prepared by chemical synthesis from salicylic acid, through acetylation with acetic anhydride. The molecular weight of aspirin is 180.16g/mol. It is odourless, colourless to white crystals or crystalline powder.
What organic family is aspirin?
Aspirin or acetylsalicylic acid (acetosal) is a drug in the family of salicylates, often used as an analgesic (against minor pains and aches), antipyretic (against fever), and anti-inflammatory.
Where is acetylsalicylic acid found in nature?
Acetylsalicylic acid is one of the most widely used drugs in the world. Its ancestry the salicylates, including salicin and salicylic acid, are found in the bark and leaves of the willow and poplar trees.
What is the pH of acetylsalicylic acid?
Aspirin (acetylsalicylic acid) has a pKa of 2.97 Calculate the percentage of aspirin (acetylsalicylic acid) available for absorption in the stomach (pH = 2.0) and in the duodenum at (pH = 4.5).
Why does old aspirin smell like vinegar?
When acetylsalicylic acid ages, it may decompose and return to salicylic acid and acetic acid. If you have a very old bottle of aspirin around the house, open it and take a sniff. It may smell like vinegar, because vinegar is dilute acetic acid.
Why is the aspirin washed with cold water?
(Aspirin, like many other substances, is more soluble in hot water than in cold water. Therefore, to maximize the amount of crystals, it is best to cool the mixture as much as possible.)
What are the ingredients in aspirin?
Active Ingredients: In Each Tablet: Aspirin (324 Mg) (Nsaid). Inactive Ingredients: Carnauba Wax (May Contain This Ingredient), Corn Starch, Hypromellose, Powdered Cellulose, Triacetin.
What elements make up aspirin?
The chemical name of aspirin is acetylsalicylic acid. By looking at its chemical structure, you’ll see that it’s composed of three different types of atoms: carbon, hydrogen, and oxygen.
What is a natural source of salicylic acid?
White willow (Salix alba) is a natural source of salicylic acid.